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Understanding Egress Window Code Requirements in Wisconsin

bedroom egress window size chart

egress chart

Egress windows are essential for safety, comfort, and compliance in habitable spaces like basements. Wisconsin, like many states, has specific building code requirements that homeowners and contractors must follow when installing egress windows. Failure to comply can lead to safety risks, failed inspections, or costly renovations. This guide focuses on Wisconsin’s egress window code requirements and provides practical advice to ensure your project meets all standards.

1. Why Are Egress Windows Required?

Egress windows are more than a building code mandate—they’re a critical safety feature that ensures occupants have a safe exit during emergencies like fires. They also provide:

• Natural Light: Bringing daylight into darker spaces like basements.

• Ventilation: Improving air circulation, especially in enclosed areas.

• Legal Compliance: Meeting Wisconsin building codes for habitable spaces, especiall bedrooms in basements or below-grade rooms.

2. Wisconsin’s Egress Window Code Requirements

Wisconsin follows the International Residential Code (IRC) with state-specific adjustments. Below are the main requirements to consider:

Size and Opening Standards:

• Minimum Width: 20 inches

• Minimum Height: 24 inches

• Minimum Opening Area: 5.7 square feet (5 square feet if the window is at ground level)

• Maximum Sill Height: The bottom of the egress window cannot be more than 44 inches above the finished floor.

• Wisconsin requires that all bedrooms have glazed window openings, which are at least 8% of the floor area.

Window Wells for Below-Grade Windows:

If the egress window is installed below ground, it must have a window well that meets the following specifications:

• Minimum Well Size: 9 square feet of floor area, with a minimum width of 36 inches.

• Ladder Requirement: If the window well depth exceeds 44 inches, a permanent ladder or steps must be installed.

Escape Accessibility:

• The window must open without special tools or excessive force.

• Any grates, covers, or bars installed over the window well must be removable from the inside without keys, tools, or force.

Pro Tip: Always check with your local municipality in Wisconsin, as some cities (like Milwaukee or Madison) may have stricter or additional requirements.

3. Regional Variations Within Wisconsin

While Wisconsin generally follows the IRC, individual municipalities often enforce localized codes or inspections. Here’s how two major cities handle egress window requirements:

Milwaukee: Requires strict adherence to size and well specifications, with additional inspections for waterproofing and drainage systems.

Madison: Focuses on energy efficiency compliance, often requiring low-E glass and proper insulation in egress window installations.

Pro Tip: Before starting your project, contact your local building inspection department or check your city’s building code website to confirm specific requirements.

4. Common Challenges During Installation

Installing an egress window in Wisconsin comes with unique challenges due to the state’s climate and soil conditions. Here are a few to consider:

Freeze-Thaw Cycles: Wisconsin winters can cause expansion and contraction in the soil, potentially affecting the stability of window wells. Proper drainage systems and reinforced materials are critical.

Waterproofing: Improperly sealed egress windows can lead to basement flooding, especially during heavy rains or snowmelt.

Foundation Cutting: Installing an egress window often requires cutting through concrete or brick foundations, a process that must be done carefully to maintain structural integrity.

This is why it’s very important to hire a licensed contractor who specializes in basement egress window installations.

5. Tips for Ensuring Code Compliance

To ensure your egress window installation meets Wisconsin’s requirements, follow these tips:

1.      Hire a Licensed Contractor: Professional contractors understand local codes and have the expertise to handle excavation, foundation cutting, and installation safely.

2.      Check Local Building Permits: Always secure the proper permits before starting your project. In Wisconsin, a permit is generally required for any structural modification, including egress windows.

3.      Prioritize Waterproofing: Invest in high-quality window wells, covers, and drainage systems to prevent water damage.

4.      Schedule Inspections: Most Wisconsin municipalities require a final inspection to ensure

the egress window meets code requirements.

  Resources for Wisconsin Homeowners

If you’re planning to install an egress window, these resources can help you navigate code requirements:

• Wisconsin Department of Safety and Professional Services (DSPS): Website for

statewide building regulations and permits.

• City of Milwaukee Building Inspection: Milwaukee Building Code Information.

• City of Madison Building Inspection: Madison Building Permits.

• International Residential Code (IRC): IRC Codes and Standards.

Why Choose EZegress Windows for Your Wisconsin Egress Window Installation?

At Ezegress Windows, we specialize in installing code-compliant egress windows that enhance safety, meet local regulations, and improve the aesthetic of your home. Here’s why homeowners across Wisconsin trust us:

Local Expertise: Familiarity with Wisconsin’s specific code requirements and climate challenges.

End-to-End Service: From securing permits to final inspections, we handle every step of the process.

Proven Track Record: Hundreds of successful egress window installations across cities like Milwaukee, Madison, and Waukesha.

Testimonial: “Professional, timely, good communication, fairly priced, efficient, clean. Not much else to say about EZegress. I’d use them again if I had more windows to install. I’d recommend them for all your egress window needs.” – Jeremy Lois, WI

Final Thoughts

Understanding Wisconsin’s egress window code requirements is crucial for a safe, compliant, and hassle-free installation. By following the state’s building codes and working with a trusted professional, you can transform your basement into a safe, comfortable, and functional space.

Contact EZegress Windows today for a free consultation or to learn more about how we can help you with your egress window project.